SVENS K STANDARD SS-EN 1563:2018

SVENSK STANDARDSS-EN 1563:2018Fastställd/Approved: 2018-08-21Utgåva/Edition: 3Språk/Language: engelska/EnglishICS: 77.080.10;77.140.80

Gjutna material – Segjärn

Founding – Spheroidal graphite cast irons

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Europastandarden EN 1563:2018 gäller som svensk standard. Detta dokument innehåller den officiella engelska versionen av EN 1563:2018.

Denna standard ersätter SS-EN 1563:2012, utgåva 2.

The European Standard EN 1563:2018 has the status of a Swedish Standard. This document contains the official version of EN 1563:2018.

This standard supersedes the SS-EN 1563:2012, edition 2.

Denna standard är framtagen av kommittén för Gjutet järn och stål, SIS / TK 130.

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EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM

EN 1563 August 2018

ICS 77.080.10 Supersedes EN 1563:2011English Version Founding - Spheroidal graphite cast irons Fonderie - Fontes à graphite sphéroïdal Gießereiwesen - Gusseisen mit Kugelgraphit

This European Standard was approved by CEN on 9 April 2018. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION C O M I T É E U R O P É E N D E N O R M A L I S A T I O N E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N G CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1563:2018 E

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Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 6

3 Terms and definitions ................................................................................................................................... 6

4 Designation........................................................................................................................................................ 8

5 Order information .......................................................................................................................................... 8

6 Manufacture ...................................................................................................................................................... 8

7 Requirements ................................................................................................................................................... 9 7.1 General ................................................................................................................................................................ 9 7.2 Ferritic to pearlitic spheroidal graphite cast irons ............................................................................ 9 7.3 Solid solution strengthened ferritic spheroidal graphite cast irons ......................................... 12

8 Sampling .......................................................................................................................................................... 13 8.1 General ............................................................................................................................................................. 13 8.2 Cast samples ................................................................................................................................................... 14 8.3 Samples cut from a casting ....................................................................................................................... 15

9 Test methods ................................................................................................................................................. 20 9.1 Tensile test ..................................................................................................................................................... 20 9.2 Impact test ...................................................................................................................................................... 21 9.3 Hardness test ................................................................................................................................................. 22 9.4 Graphite morphology examination ....................................................................................................... 22

10 Retests .............................................................................................................................................................. 22 10.1 Need for retests ............................................................................................................................................. 22 10.2 Test validity .................................................................................................................................................... 23 10.3 Non-conforming test results .................................................................................................................... 23 10.4 Heat treatment of samples and castings .............................................................................................. 23

11 Inspection documentation ........................................................................................................................ 23

Annex A (informative) Additional information on solid solution strengthened ferritic spheroidal graphite cast irons ................................................................................................................ 24

Annex B (informative) Guidance values for mechanical properties determined on test pieces machined from samples cut from the castings .................................................................................. 27

Annex C (informative) Guidance values for hardness .................................................................................... 29

Annex D (informative) Nodularity ........................................................................................................................ 31

Annex E (informative) Additional information on mechanical and physical properties .................. 32

Annex F (normative) Sectioning procedure for cast samples ..................................................................... 36

Annex G (informative) Comparison of spheroidal graphite cast iron material designations according to EN 1560 [1] and ISO/TR 15931 [15] ............................................................................ 37

Annex H (informative) Fracture mechanical approach to spheroidal graphite cast irons ............... 38

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Annex I (informative) Significant technical changes between this European Standard and the 2011 edition ............................................................................................................................................ 43

Annex J (informative) Significant technical changes between the 1997 edition and the 2011 edition ............................................................................................................................................................... 44

Annex ZA (informative) Relationship between this European Standard and the essential safety requirements of Annex I of the Directive 2014/68/EU aimed to be covered ............ 46

Bibliography ................................................................................................................................................................. 47

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European foreword

This document (EN 1563:2018) has been prepared by Technical Committee CEN/TC 190 “Foundry technology”, the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2019 and conflicting national standards shall be withdrawn at the latest by February 2019.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 1563:2011.

This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive 2014/68/EU, see informative Annex ZA, which is an integral part of this document.

Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 7 “Spheroidal graphite, silicon molybdenum and austempered ductile iron” to revise EN 1563:2011.

Annex I provides details of significant technical changes between this European Standard and the 2011 edition (previous edition).

Annex J provides details of significant technical changes between the 1997 edition and the 2011 edition.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

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Introduction

The properties of spheroidal graphite cast irons depend on their structure.

Spheroidal graphite cast irons covered by this European Standard are divided in two groups:

1) ferritic to pearlitic spheroidal graphite cast irons;

2) solid-solution strengthened ferritic spheroidal graphite cast irons.

The two groups present specific properties, for example:

— the ferritic grades of the first group present the highest impact energy;

— the pearlite containing grades are more suitable for wear resistance applications;

— the solid-solution strengthened ferritic grades present for an equivalent tensile strength a higher proof strength and a higher elongation after fracture than that of the ferritic to pearlitic grades;

— a significant property of these solid-solution strengthened ferritic grades is the reduced hardness variation resulting in an improved machinability.

The mechanical properties of the material can be evaluated on machined test pieces prepared from:

— separately cast samples;

— side-by-side cast samples;

— cast-on samples;

— samples cut from a casting.

The material grade is defined by mechanical properties measured on machined test pieces prepared from cast samples.

If hardness is a requirement of the purchaser as being important for the application, then Annex C provides means for its determination.

It is well known that tensile properties and hardness of spheroidal graphite cast irons are interrelated. When considered by the purchaser as being important for the application, both tensile and hardness properties may be specified.

Further technical data on spheroidal graphite cast irons is given in Annexes A, E and H.

In this European Standard, a designation system by number, as established in EN 1560 [1], is given. NOTE This designation system by number is based on the structure and rules of EN 10027–2 [2] and so corresponds with the European numbering system for steels and other materials.

Some spheroidal graphite cast iron grades can be used for pressure equipment.

The permitted material grades of spheroidal graphite cast irons for pressure applications and the conditions for their use are given in specific product or application standards.

For the design of pressure equipment, specific design rules apply.

Annex ZA gives information relating to the conformance of the spheroidal graphite cast iron grades to the Pressure Equipment Directive 2014/68/EU.

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1 Scope

This European Standard defines the grades and the corresponding requirements for spheroidal graphite cast irons.

This European Standard specifies 2 groups of spheroidal graphite cast iron grades by a classification based on mechanical properties measured on machined test pieces prepared from cast samples. The first group deals mainly with ferritic to pearlitic grades. The second group deals with solid-solution strengthened ferritic grades.

This European Standard does not cover technical delivery conditions for iron castings (see EN 1559-1 [3] and EN 1559-3 [4]).

This European Standard does not cover:

— ausferritic spheroidal graphite cast irons which are specified in EN 1564 [5];

— low alloyed ferritic spheroidal graphite cast irons which are specified in EN 16124 [6];

— continuous cast iron bars which are specified in EN 16482 [7];

— austenitic cast irons which are specified in EN 13835 [8];

— spheroidal graphite cast irons used for pipes, fittings and their joints which are the subject of EN 545 [9], EN 598 [10] and EN 969 [11];

— the grades of spheroidal graphite cast irons as specified in EN 545 which are used for products such as industrial valves, non-industrial manually operated shut-off valves and flanges and their joints, which are the subject of the applicable European product standards.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

EN 764-5:2014, Pressure equipment - Part 5: Inspection documentation of metallic materials and compliance with the material specification

EN 10204:2004, Metallic products - Types of inspection documents

EN ISO 148-1, Metallic materials - Charpy pendulum impact test - Part 1: Test method (ISO 148-1)

EN ISO 945-1, Microstructure of cast irons - Part 1: Graphite classification by visual analysis (ISO 945-1)

EN ISO 6506-1, Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1)

EN ISO 6892-1, Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO 6892-1)

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/

— ISO Online browsing platform: available at http://www.iso.org/obp

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http://www.electropedia.org/

http://www.iso.org/obp

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3.1 spheroidal graphite cast iron cast material, iron, carbon and silicon-based, the carbon being present mainly in the form of spheroidal graphite particles

Note 1 to entry: Spheroidal graphite cast iron is also known as ductile iron, and less commonly as nodular iron.

3.2 ferritic to pearlitic spheroidal graphite cast iron spheroidal graphite cast iron with a matrix containing ferrite or pearlite or a combination of both

Note 1 to entry: Pearlite can be partially or totally replaced by quenched microstructures in grades having higher strength.

3.3 solid-solution strengthened ferritic spheroidal graphite cast iron spheroidal graphite cast iron with a matrix mainly consisting of ferrite, solution strengthened by increasing the amount of silicon compared to ferritic to pearlitic spheroidal graphite cast iron

3.4 graphite spheroidizing treatment operation that brings the liquid iron into contact with a substance to produce graphite in the predominantly spheroidal (nodular) form during solidification

Note 1 to entry: This operation is often followed by a second one called inoculation.

3.5 cast sample quantity of material cast to represent the cast material

Note 1 to entry: This includes separately cast samples, side-by-side cast samples and cast-on samples.

3.6 separately cast sample sample cast in a separate sand mould under representative manufacturing conditions and material grade

3.7 side-by-side cast sample sample cast in a mould alongside the casting, with a joint running system

3.8 cast-on sample sample attached directly to the casting

3.9 relevant wall thickness wall thickness representative of the casting, defined for the determination of the size of the cast samples to which the mechanical properties apply

SS-EN 1563:2018 (E)


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SVENS K STANDARD SS-EN 1563:2018